class CreateLineItems < ActiveRecord::Migration
  def self.up
    create_table :line_items do |t|
      t.integer :product_id, :null => false
      t.integer :order_id,   :null => false
      t.integer :quantity,   :null => false
      t.decimal :total_price, :null => false, :precision => 8, :scale => 2
      t.timestamps
    end
    execute "alter table line_items
               add constraint fk_line_item_products
               foreign key  (product_id) references products(id)"

    execute "alter table line_items
               add constraint fk_line_item_orders
               foreign key  (order_id) references orders(id)"
  end

  def self.down
    drop_table :line_items
  end
end
